Solve the problem.The cost for labor associated with fixing a washing machine is computed as follows: There is a fixed charge of $25 for the repairman to come to the house, to which a charge of $20 per hour is added. Find an equation that can be used to determine the labor cost, C, of a repair that takes x hours. Write the final answer in the form C = mx + b.
A. C = 45x
B. C = -20x + 25
C. C = 25x + 20
D. C = 20x + 25
Answer: D
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Construct a truth table for the statement.(~p ? ~q) ? ~(q ? p)
A. 
| T | T | T |
| T | F | T |
| F | T | T |
| F | F | F |
B.
| T | T | T |
| T | F | T |
| F | T | T |
| F | F | T |
C.
| T | T | F |
| T | F | F |
| F | T | F |
| F | F | F |
D.
| T | T | T |
| T | F | F |
| F | T | F |
| F | F | T |
Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates is a real number.
A. Always B. Sometimes C. Never
Write the sample space for the experiment. Ed and Juan each have a bag containing 3 slips of paper labeled rock, paper, and scissors. Each of them draws a slip from their own bag.
A. S = {(rock, paper), (rock, scissors), (paper, rock), (paper, scissors), (scissors, rock), (scissors, paper)} B. S = {(rock, paper), (rock, scissors), (paper, scissors)} C. S = {(rock, rock), (rock, paper), (rock, scissors), (paper, rock), (paper, paper), (paper, scissors), (scissors, rock), (scissors, paper), (scissors, scissors)} D. S = {(3, 3)}
Solve the triangle.A = 33°, a = 20, b = 13
A. B = 20.7°, C = 146.3°, 
B. Cannot be solved
C. B = 20.7°, C = 126.3°, 
D. B = 20.7°, C = 126.3°, 